Hayden Panettiere, soon to star on ABC's "Nashville," is the guest judge on Lifetime's "Project Runway" (8 p.m., cable channel 29), but who cares about that when there's a disappearing contestant to think about?

Michael (Jeffrey Donovan) is arrested -- again -- on USA's "Burn Notice" (8 p.m., cable channel 25). But no worries: It's part of a sting operation.